Commit 9bdb2eec authored by Christophe Leroy's avatar Christophe Leroy Committed by Michael Ellerman
Browse files

powerpc/ftrace: Don't use lmw/stmw in ftrace_regs_caller() 



For the same reason as commit a85c728c ("powerpc/32: Don't use
lmw/stmw for saving/restoring non volatile regs"), don't use
lmw/stmw in ftrace_regs_caller().

Use the same macros for PPC32 and PPC64.

Signed-off-by: default avatarChristophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/ec286d2cc6989668a96f14543275437d2f3f0e3a.1645099283.git.christophe.leroy@csgroup.eu
parent 57201d65

arch/powerpc/kernel/trace/ftrace_mprofile.S

+2 −8
Original line number Diff line number Diff line
@@ -43,18 +43,16 @@ _GLOBAL(ftrace_regs_caller) 


	/* Save all gprs to pt_regs */

	SAVE_GPR(0, r1)

#ifdef CONFIG_PPC64

	SAVE_GPRS(2, 11, r1)



#ifdef CONFIG_PPC64

	/* Ok to continue? */

	lbz	r3, PACA_FTRACE_ENABLED(r13)

	cmpdi	r3, 0

	beq	ftrace_no_trace

#endif



	SAVE_GPRS(12, 31, r1)

#else

	stmw	r2, GPR2(r1)

#endif



	/* Save previous stack pointer (r1) */

	addi	r8, r1, SWITCH_FRAME_SIZE
@@ -120,11 +118,7 @@ ftrace_regs_call: 
#endif



	/* Restore gprs */

#ifdef CONFIG_PPC64

	REST_GPRS(2, 31, r1)

#else

	lmw	r2, GPR2(r1)

#endif



	/* Restore possibly modified LR */

	PPC_LL	r0, _LINK(r1)